In Chicago, there’s a way to streghthen memory in a handful of patients with epilepsy that could implication for Alzheimer’s disease. The pacemaker devices known as deep brain stimulators made by Medtronic and St Jude Medical are used to calm muscle tremors to Parkinson’s patient and other movement disorder. It is now being tested for a host of another treatment-resistant depression. The devices are implanted under the skin in the chest with wires leading up the neck connected to tiny electrodes implanted deep in the brain which produce electrical impulses. The study was done by University of California at Los Angeles in seven epileptic patients awaiting surgery who had electrodes implanted deep in the brains to help pinpoint the source of their seizures. The team used this opportunity to see how stimulating the brain affects memory.